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Multilayer co-extrusion transparent high-impact antistatic polycarbonate composite material and preparation method thereof

A polycarbonate, composite material technology, applied in electrostatic, chemical instruments and methods, layered products, etc., can solve the problems of low strength and transparency, poor antistatic effect, etc., to achieve short cycle, short production process, high strength and the effect of shock properties

Pending Publication Date: 2022-04-05
上海品诚控股集团有限公司
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  • Abstract
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a multi-layer co-extruded transparent high-impact antistatic polycarbonate composite material and its preparation method to overcome the poor antistatic effect, low strength and low transparency of antistatic composite materials in the prior art Defects

Method used

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  • Multilayer co-extrusion transparent high-impact antistatic polycarbonate composite material and preparation method thereof
  • Multilayer co-extrusion transparent high-impact antistatic polycarbonate composite material and preparation method thereof
  • Multilayer co-extrusion transparent high-impact antistatic polycarbonate composite material and preparation method thereof

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Experimental program
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Embodiment 1-4 and comparative example 2-3

[0045] The preparation method of embodiment 1-4 and comparative example 2-3 polycarbonate composite material comprises the steps:

[0046] According to the ratio in Table 1, extrude the components of the static dissipative layer through a twin-screw extruder at 240-280°C to obtain an antistatic masterbatch, dry it at 120°C for 2 hours, and put it into the auxiliary machine of the single-screw extruder. Put pure polycarbonate or functional polycarbonate (corresponding to the polycarbonate layer) into the main unit of the single-screw extruder, extrude the auxiliary unit of the single-screw extruder and the main unit of the single-screw extruder together to obtain a polycarbonate composite material . The temperature of each section of the single-screw extruder is 230, 250, 260, 270, 260, 250, and 230° C., the rotation speed of the extrusion screw is 300-500 rpm, and the rotation speed of the granulator is 40 rpm.

[0047] The functional polycarbonate is obtained by extruding th...

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Abstract

The invention relates to a multilayer co-extrusion transparent high-impact antistatic polycarbonate composite material and a preparation method thereof. The composite material comprises two surface layers on the outermost layer and a core layer between the two surface layers, the two surface layers are static dissipation layers, and the core layer is a polycarbonate layer; the static dissipation layer comprises the following components in parts by weight: 50-95 parts of copolymerized PC resin; 5-40 parts of an antistatic auxiliary agent; and the polycarbonate layer is made of pure polycarbonate or functional polycarbonate. The composite material has the characteristics of good antistatic property, high transparency, high strength and high impact.

Description

technical field [0001] The invention belongs to the field of antistatic composite materials and preparation thereof, in particular to a multilayer co-extruded transparent high-impact antistatic polycarbonate composite material and a preparation method thereof. Background technique [0002] At present, antistatic composite materials are generally divided into long-term and short-term antistatic; permanent and long-term antistatic uses: 1. Conductive fillers such as metal powder, metal oxide or carbon-based materials such as carbon black, graphite or carbon fiber filling, Generally, the amount of addition is large, which greatly affects the strength and transparency of the material; 2. Conductive polymer materials, such as conductive polymers such as doped polyaniline, polythiophene, and polyphenylene vinylene, are used to adjust the surface resistivity of the material. Generally, the amount of addition is also large, which affects Strength and transparency, while the surface ...

Claims

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Application Information

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IPC IPC(8): B32B27/36B32B27/18B32B27/06C08L69/00C08L75/08C08K3/38C08K3/04B29C70/52H05F1/00
Inventor 刘淑辉陈增军宋治乾陈方马海丰夏云兰
Owner 上海品诚控股集团有限公司
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